Vacuum Pump from Fridge Compressor
ฝัง
- เผยแพร่เมื่อ 29 ต.ค. 2018
- I have planned this project years ago, to stabilize my knife handles with oil or resin. Last year our fridge broke an so I got a free fridge compressor to realize it. The vacuum is pretty good, better then I thought.
- วิทยาศาสตร์และเทคโนโลยี
This music fitted so COOL with this Mechanical work making it much more interesting then that it would be without. Contrast is very AWESOME.
Excellent video and excellent workmanship too. A couple of comments, things you might want to consider: the oil normally used in these compressors is a synthetic oil that has (I believe) characteristics that make it undesirable on the skin (nasty carcinogenic type thing) they also don't like moisture at even super low levels as it degrades them quickly (The reason for the "filter drier" bulb thing in fridges etc) and they are designed to be miscible in the refrigerant so that as the oil inevitably comes out the discharge tube with the gas the oil will travel the whole circuit with the refrigerant and end up back in the compressor. My answer to these issues was to remove the oil and measure how much comes out (use the suction or process tubes for this) then replace it with ordinary compressor oil in the same amount as was removed. The discharge I plumbed into a wide verftical section of tube such that the air flow at that point would slow down enough to drop any oil traveling with it. The air inlet to the wider tube is about half way up one side and angled so that in the wider tube it points downward. The air outlet is at the top and the oil outlet is at the bottom and connected via a hand operated valve to the suction line of the compressor. Sol oil recovery is a manual operation but not a big deal.
One last thing, I hope you don't mind me saying all this, most of these compressors will not start if there is back pressure (or suction) at starting. To overcome this I put a valve on the suction to the appliance and use that and the oil recovery valve to start the compressor without losing the suction on the appliance.
I hope that makes sense to anybody interested enough to read it all.
Thank You for the extensively comment. It's very helpful! 👍
Thanks for the tip!
Good video and informative. Planning on doing something like this myself to make a vacuum pump for carbon fibre parts.
Watching from Northern Ireland 👍
Thank You! Best regards to Northern Ireland!
Did you end up building any parts? How big a part would this work on?
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As an HVAC tech I cried a little when he pulled out the hack saw. Use pipe cutters to reduce copper shavings from going in and damaging your compressor and contaminating the oil. Other than that I liked the vid man pretty cool stuff.
Question. I've seen numerous comments on videos like this saying that the pump won't last due to lubrication. What is your opinion?
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can I USE THIS COMPRESSOR AS LEAK TESTER TO AIRCON CARS ?
This music fitted so cool with this mechanical work making it much more interesting then that it would be without. The contrast is very awesome.
I made a pump like this 40 years ago. it was 30 years old when I did it. It still works.
Wow! Looks like these compressors work better for vacuum than for the "silent" compressors that I have been seeing a lot of videos about. I have been wanting to build a vacuum pump for some time for different projects that I want to do. Thank you for taking the time to make this video.
Thank You!
@@samsworkshopdiary5748 beh .
Xd
You Tube can be terrific. Thanks for sharring.
Wooow! Congratulations!!!! Good work!!!
Thank You!
Pp
I learned a couple things here.
Also your explanation in a comment below regarding knife handle stability and water resistance was good, you could have included that in the video for dummies like me. 👍
Thank you for your comment and your note!
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You can run these as vacuum pumps for hours on end if you provide cooling by just aiming a fan on it (there's overheating protection that will shut off power otherwise). I've run one for 12 hours once doing a distillation. Fridge pumps have a slow flow rate but pull aspirator vacuum easily (50-60 mmHg), a good one will go down to 30" even.
Thank You for these informations 👍.
Nice, thx for the video! Can you explain exactly what you mean by "stabilize my knife handles with oil or resin"? I see it's pulling all the air out, so oil must go in these spaces, but why is this necessary/good? Also what kind of oil is that? Thanks!
Hi Stephen. With an hardening oil for example linseed (that's what I used) or walnut oil you can make wood more stable and water resistant. When you just put the oil on a piece wood, the oil penetrates only superficially, with a vacuum it penetrates much deeper. There are also different resins that you can use for it, for an even better result.
Hes using the vacume to pull the liquid Into the wood. It's like sealing leather the deeper you get your sealant into it the beter it will hold up and hold off water.
@@samsworkshopdiary5748 very good solution! Great!
@@vianaautocenter258 Thank You!
The vacuum pulls gases out of compounds as well... so water H20 will purge into hydrogen
what to look for when buying used fridge compressor? which brands last longest and pump out more air?
Excellent work Nice video
Thank You!
Great work..👍 Wich welding mechine you used?
Thank You! It's a Stamos Germany TIG Welder.
Nice work. Well thought out.
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Good video. But how hard is it to talk? The loud unwanted music doesn’t help.
Would a mini fridge compressor make enough vacuum to remove the bubbles from epoxy or plaster, if i had like a 12inch cube chamber?
Disculpe mi ignorancia pero que efecto se produce en el frasco con el aceite y el cuchillo? Es para que el aceite llegue a todos los rincones o que funcion tiene ese vacio?
Put a common run/start capacitor between the switch and relay/thermal protector for big increase in power
Thank You for the tip!
@@samsworkshopdiary5748 ما نوع التجربة🤔
Are you assuming the motor has a separate wire for this purpose? I ask because without it this cannot do anything good for the motor but may do something very bad for the switch that finds the capacitor as a part of the load.
If there is a separate wire then the motor shouldn't even be able to start without the capacitor (although you might be lucky if it can be very very lightly loaded mechanically to start with).
In either case, connecting a random capacitor is a bad idea. Use the value the motor was designed to have connected and connected in the manner for which the motor was designed or you might just burn out the motor in short order.
There is usually documentation on the web (if not on the side of the compressor) that will give you this information. Some Japanese compressor data is harder to find but the others seem to be easy enough if you dig a little.
I should also have pointed out in my previous post one very important point: unless you are draining the oil out never have one of these compressors anything except upright. Even lying on one side is enough to get oil into the compression chamber and that's enough to destroy the compressor as soon as it is turned on. Every fridge compressor I have ever seen has had this restriction. I have not see every single compressor though so some room for error here on my part. All I can say is I have destroyed compressors this way and avoiding this has never resulted in a destroyed compressor. So I err on the conservative side and keep them upright always. Check the manufacturers, some indicate the maximum tilt, others might but I didn't look that deep.
Hope that saves someone a world of woe after a lot of work on a compressor.
Hi Sam, nice video. One question. What number did the meter reach? I mean, how strong is the vacuum in what time? Thanks and Keep going!
I'm thinking of making one of these. Do you know if compressor type matters at all? Like scroll vs piston?
Impressive amount of air in that handle
Excellent video could you provide me with a diagram of the electrical connections thanks
Normally there are 3 connectors at a fridge compressor start, run and common. And there is a capacicator between start an L. Please have a look at google for more informations there are many wiring diagramms and explainings.
I cannot see numbers on manometer, I am interested how much vacuum is achieved this way in negative bar or PSI. If I don't connect manometer, how strong vacuum can I expect after lets say 20 seconds runtime of the compressor?
Can it be used as vacuum pump in airconditioners for preparation of refrigerants charging?
Thanks for this i need a vacuum for resin work have an old fridge i could use too! By the way "Yer mustards yeller!"
great idea
Thank You!
How often do you have to lubricate the pump by let it suck in oil?
Que trabalho espetacular! Mas qual o efeito do óleo sobre a faca no vácuo?
O óleo penetra no cabo da faca de madeira e torna-o mais difícil e resistente à água.
That was very interesting 🤔. At this point I'm very worried, because I just brought home a refrigitator on a home depot Pic up truck. My problem is I had to lay it side ways. And I think I put it down on the wrong side. I brought it home this Saturday, and have not turned it on as of yet(Tuesday) . The compressor is an Embraco Vegy 8H. I laid the fridge with the 2 small copper tubes laying down. Please advice sir. Did I mess up bad? Any feedback would be great. Have a good one.
what the spesification of the compressor?
is this compressor can also to pump pcp air gun? thanks
Where did you get the vacuum gauge from and what type was it?
Hi John, the gauge is from Ebay. I think there are no big differences, you only have to pay attention to the connection and that it is for vacuum and not for pressure. I used a gauge with 1/8" thread and from 0 to -1 bar.
c'est bon de fabriquer de pompes à vide comme ça.pour facilité le travail aux autres'erci
How long time it took .and how many psi generated??
Good video!
Do all compressors have the same force, or will compressors from large fridges and freezers perform better than those from small fridges? And how large number of inHg can you reach with these compressors?
Thank You! I don't know if the compressors from large fridges are better but I think the most of them have the same size and I think so the same power. But maybe there will be bigger ones in some devices. I reached -675 mmHG in the small glass with my compressor.
@@samsworkshopdiary5748 What about Lubrication? I've seen comments on other videos about the oil issue. Any ideas?
Ciao Sam un lavoro molto interessante, per me di grande utilità, Ho notato che hai utilizzato solo il tubo per il vuoto cioè quello di aspirazione, domanda; l'aria che viene aspirata dove va?
inoltre il tubo che comprime deve essere chiuso ? e il terzo tubo, presumo per la carica del gas, deve essere chiuso? Grazie un saluto cordiale.
Bohrtiefenbegrenzer an der Ständerbohrmaschine....genau mein Humor.
😀 Danke dir!
This video deserve a big thumb up, 👍🏼
Thank You!
What is the purpose sir?
is this much stronger than the commercial stuff that costs around $150-$200?
Are all glass containers safe to have a vacuum in them? Will some implode?
Not all glasses are made for a vacuum, yes it's possible that some glasses will implode.
I'm not sure how this can "stabilize" a knife handle, but it is a good way for a shade tree mechanic to make his own tools for working on a refrigeration or air conditioning system. you can add oil by a mister to the inlet of the pump, and also you can put the discharge of the pump into a vessel of water and watch for bubbles. when the bubbles stop with the compressor running, you have achieved the maximum vacuum.
عندي موتور تلاجه قديم بس مفهوشي زيت ينفع أعمله ضاغط هواء
This guy seems very hard working, genious and professional in perfection. but some thing I noticed that an air filter should be needed at suction line. I request you to make a video on Refrigerant recycling machine and a pressure pump(for leakage testing in Refrigeration field) using this compressor. Thanks.
Whats the parts you're using, can you give a list please
I have been saving an old 'fridge compressor to do this. But now I need to fix my car AC and do not have time to do this. Looks like trip to Harbor Freight for a $90 vacuum pump.
Vacuumpumpe ist schon was feines. Gruß Detlef
what is the maxium vaccum presure can it handle!!?
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those compressors have oil mixed in the freon when in the fridge where will it get luberication without the oil/freon charge wont the pump burn up?\
the oil is in that black container
كم استطاعة الضاغط اخي ؟؟
I turned the sound off, hope you don’t mind!
No Problem 😁. I know that the music is not the best. Also the music in my new videos does not like everyone. So feel free to turn it off.
I love the music! Reminds me of the iconic dreamy music from the iconic Geico caveman commercials.
@@samsworkshopdiary5748 You kidding me. Its friggin awesome! Esp that track at 2:30....where did you get that? Its AWESOME!
@@RandomPsychic Thank You! It's a song from the youtube library. But I don't remember the name.
@@samsworkshopdiary5748 If you can remember it it would make my life wonderful....
I keep reading comments on fridge compressor conversations and oil flow. Does anyone have any views on this?
Is this a pump that will last?
Now you got me wondering. Did you get to the btm of that? I’m thinking of making one of these now.
@@ThisTall No nothing yet. I got sidetracked.
This is very nice
Una pregunta esa bonba saca toda la humedad del sistema
I hope I can do as well and be like you, I wish you and everyone a good time and happiness
Really neat. I'm doing the same kind of thing. I did notice that you didn't install the thermal overload safety switch/cut off. It can burn up that way. They are cheap online.
Yes you are right I didn't install it. The overload switch was broken, for that reason the fridge didn't work. Maybe I will buy a new one in the future, until then I don't let the pump unattended. Thanks for that safety advice. 👍
Congratulations for this vídeo. If I pick an old engine (taken from old refrigerator), How can I know If It is necessary to complete the oil that It uses inside?
That is hard to say. If it is still installed, it has enough oil. But even a removed should not have lost a lot of oil. After some time of use you have to let it suck in some oil, as it always blows out a little oil.
Manolo Duda, Home refrigerators today, in the U.S.A., use R134A refrigerant with PAG (polyalkylene glycol) oil.
European countries may use propane R600A, another story and highly flammable.
Back to,
PAG (polyalkylene glycol) oil, absorbs moisture (water) quickly, which will destroy the compressor, and not pull a deep vacuum or any moisture from the container one is attempting to pull a vacuum on.
Never purchase PAG oil in a plastic container, as it will absorb moisture through the container as it sits on the store shelf, thus contaminating the oil, purchase only oil in metal containers.
Mineral oil is the preferred oil, for vacuum pumps or compressors that utilize refrigerant R12, but shouldn't be mixed with PAG oil. While a vacuum can be reached with a refrigerator compressor, a Two-stage vacuum pump is desired, when pulling a deep vacuum, for any refrigeration purpose.
Sometimes the compressor label will list oil quantity, and model number lists in code refrigerant for the compressor, and the manufacturer lists more information.
Also, One can drain the oil from a compressor and measure the amount, then one will have an idea of the amount of oil that was in it, and have at least a replacement amount.
The oil should be replaced after every evacuation job, as the oil becomes contaminated and will not pull a good vacuum, which should be measured, and held to at least 500 microns, for 15 minutes with the pump off, and the thing being evacuated closed, and a gauge showing 30Hg alone will not be accurate.
I would be cautious about using any glassware not approved for evacuation purposes because of the dangers of implosion. Rubber tubing must be suitable for evacuation or it will crush and/or leak air from the outside. Copper is best, and use refrigeration copper tubing, as it is dehydrated.
@@billysunsteelfriendstransa8843 Thanks for your detailed answer. Very helpful! 👍
Sam's Workshop Diary,
No problem, I edited it with more information.
@@billysunsteelfriendstransa8843 thanks for this complete answer.
It's a great idea. Really I want to make this type of project. thanks for your nice idea. I will try to make according to your idea
Thank You!
you are welcome
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@@samsworkshopdiary5748 llllllllllllllllll
Can you get a higher vaccum if you connect two or more compressors in series?
Parallel
Que ganas de poner la musica de fondo TAN FUERTEEE!!!
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I have an old refrigerator out back that no longer works but it may be that the pump still works. I'll have to give it a try.
I already converted an old electric tire pump/basket ball pump into a vacuum pump but I'm only able to get about 17 pounds of vacuum pressure out of it. I'd like at least 20 in order to de-gas the Plastisol and other resins I'm working with.
How much vacuum pressure is your refrigerator pump pulling? I wasn't able to get a clear look at the gauge on your video.
Thanks for your comment! approximately -650 mm/hg
How to use wedding machine touch ,I am intrest parchess
Grüße dich. Nimmt du Leinöl Firnis oder reines Leinöl? Und für wie lange lässt du es in der Kammer?
Hi, ich hab das Ra Linolja von Dictum genommen, also unbehandeltes. Leinöl Firnis tuts aber auch. Bei so einem kleinen Messergriff sollte eine Stunde reichen, ich hab aber noch keine Durchdringungstests gemacht, im zweifel lieber länger.
What were you doing to the knife?
Than you
How much of a vacuum is a typical fridge compressor able to maintain ??
My compressor is able to get a vacuum better than -0,9 bar / -13 psi
@@samsworkshopdiary5748 don't most vacuum gauges read inHg?
@@whozaskin3639 I don't know, the most ones that I've found on ebay indicate in bar.
can you tell me a list of the parts you used for this compressor?
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i have tank 50 litre so what king of compressor fridg shall i put to make air compressor
It depends on how much air you need. To fill a 50 litre tank only one fridge compressor needs a lot of time. So it would be good if you use more than one. Normally you can use every fridge compressor you will find.
Ok, what’s happening with the knife ?
The air escapes out of the wooden handle and the oil gets into it and harden the wood.
amigo como eu messo a capacidade do meu cilidro
Pneu 19, Quando eu era criança pequena lá em Barbacena! rsrsrs, eu fazia o seguinte: media o diâmetro do cilindro, tomava-se o raio e elevava-o ao quadrado (raio x raio); deste resultado multiplicava pelo "pi" (letra grega) que equivale à: 3.1416 , novamente deste novo resultado, multiplicava pelo comprimento do cilindro! pronto! obtinha a capacidade volumétrica do clindro! ou "cilindrada" (do cilindro de um motor), que é o espaço que percorre o pistão do ponto morto inferior, até o ponto morto superior! sacou? kkkkkk
What is that process with the knife🧐??
You need to put a fan on the compressor. Good job.
Thank You!
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I turned the music up extra loud and played it in a public place, just to further aggravate the guys in the comment section who clearly already have too much to worry about.....
Nice video..
😁 Thank You!
Is this vaccum pump works with liquid at high temperature? Plz answer me🙏
Hi, Sorry but I can't say, if that will work.
the music, the music it's a youtube thing to drive viewers insane...
All the copyright garbage caused it
+1 👍
They seem to all get it from the same source.
Great video! Will you have to add oil to the compressor and, if so, where do you add it? Thanks!
Until now, I have not added oil. When it is necessary you can let the comressor suck the oil.
@@samsworkshopdiary5748 I think it has self lubricating system like bath of oil in that compartment already, i dont think it ever needs any oil.
@@idontcare7961 it probably will at some point down the road. The compressor is designed(?) to spit oil along with refrigerant so if you run it in an open system, you'll see it spitting oil at the output. Keep it running that way and you'll starve it of lubrication.
@@wolfdale_3m True, i forgot its not enclosed system anymore.
what type of welding machine you use . In this video?
I'm using a stamos germany tig welder (200A IGBT) www.stamos-schweissgeraete.de/products/de/WIG-Schweissgeraete/WIG-Schweissgeraet-200-A-IGBT.html
how many mm/hg does the engine?
approximately -650 mm/hg
How much microns can this pull down to
C'est très intéressant... Je pourrais trouver le compresseur mais c'est les autres composants c'est compliqué
Awesome looks so simple like they made the compressor idiot proof lol
WHy do u put a knife into a oil? Great video btw..
Hello . Our Hotpoint Ariston refrigerator stalls after turning on after 5-7 seconds. A red square flashes on the front door displays. When starting without a start-up protective relay, the compressor works, but the refrigerator does not cool and the display on the front door of the refrigerator does not light. Please tell me what is the reason ?? Is there a starting relay ?? and even the compressor heats up a lot during such a start.
Hi, unfortunately I can not say exactly why. The compressor may be sluggish and the starter relay has been damaged by too much current. If the compressor is running but the refrigerator is not cooling, the cooling circuit may also be leaking. It can also be a defective expansion valve, if it is clogged, the compressor has to pump more and gets warmer.
Genius! I've been casting around for ideas for building a vacuum chamber and not only have you provided a solution I can afford, but shown me how to give some TLC to a few old steak knives. Thank you!
I'm surprised at the vacuum you were able to draw without your jar breaking. I wasn't able to read your gauge, but it it's range is to full vacuum (29.92" Hg), it looks like you're pulling over 28"!
I wonder how large a jar would withstand that kind of external pressure; have you tested with larger jars?
Do you think you have drawn a higher vacuum with different hosing/joint sealing/jar lid? I'm being greedy here - how well your compressor-as-vacuum-pump works is more that sufficient for some experimentation. And if I could use, say, a gallon pickle jar I'd have an excellent system at very little cost. BTW, I was looking to play with resin casting with embedded electronics; the vacuum chamber is to remove the last little air bubble (if I can).
Thanks for your comment! I had a vacuum of around 25-28. I think there is also about the limit of such a compressor. I don't know if a larger glass can withstand it is worth a try. Otherwise it is also cheap with a pot and a plexiglass lid.
What is the purpose of this equipment? It can not be used in R&ac feild. Now adays system has changed. Mondatery to use double stage vaccum pump to lift moisture present in the system. Any have good idea for making vacum pump. Keep it up
Thank You! I'm using the pump to get the air out of the wooden knife handle.
i am using mine to regas the old ac units
The thing is, HOW to de-gaz the compressor from the fridge first ? I mean, if you need a fridge compressor, the first thing you need to do, is to get a compressor from a fridge.
Because the problem is that compressor is filled with a specific gaz that can be dangerous. You cannot just cut and remove. No ?
CFM ?
Now every dyi guy has a heli arc welder at home. Now I insert if we had such welder at home , I only use snap-on tools, I would just buy the correct tool. Done
Nice video. Excellent work. But it's completely unclear what's happening with the various connections - copper (air) and wiring. HELP!
Thank You! The electrical connections must be made exactly the same as with the refrigerator. After removal of the compressor from a refrigerator there are two pipes suction side and pressure side. Depending on what you want to do with the compressor, you can then use one of the sides.
How long do you think that compressor will last without oil return
The compressor has oil in it. the internal pump inside the outer shell runs in a bath of oil.
In a refrigerator, the oil is part of the refrigerant. It gets pumps out into the system and returns back thru the suction line to lubricate the compressor. You are getting no oil return so the compressor will run out of oil eventually. To keep this running youll want to add mineral oil or POE oil (depending on the type of refrigerant the compressor had used).
@@frun4 th-cam.com/video/F_H9wRG03aE/w-d-xo.html
Неплохо придумано для замещения воздушной прослойки в древесине.
А что он залил в банку?
@@user-nv4ie7yd6v , В описании к видео написано, что он хочет стабилизировать ручку ножа маслом или смолой.
@@mrpupkinson спасибо большое. Хорошего Дня
Интересно можно ли так обезвоживать ( консервировать) пищевые продукты?
спасибо за разъяснения
Hay qué pasarse por una chatarreria en busca de un compresor de frigorífico
you should've filled the jar to the top with oil to make it easier for the compressor to extract air as most of it it will be already out.
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Nice one
Q tipo de soldador es
I tried to build mine but the compressor only last a few minutes than broken. I check pin by pin of the electrical connections are still showing resistance. But totally not working. Is it a mechanical failure inside the compressor?
Is it possible that there is a problem with the capacitor?
Check the compressors amperage.
RLA (rated load amps) it's what the compressor should be pulling while running could be a little lower or a little higher.
FLA (full load amps) anything over that value your windings are burning up
LRA (locked rotor amps) if you achieve this value which is about 6x the RLA your compressor is seized.
Should all be written down on compressor nameplate
Top...!!!
Sehr gute Idee! Und bei diesen Würstchen kommst bestimmt aus dem Deutschsprachigen raum!? Gruß aus Ungarn
Liebe Grüße nach Ungarn, ja bin aus Deutschland.
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Oil mist will comes out from compressor,over the time there's no oil left inside the compressor
Yes you are right. Therefore In have to suck in the compressor oil from time to time.
@@samsworkshopdiary5748 well,i was did just like you do in early1995 ago..i made an air compressor using used ref.compressor and the result was not well for painting so many oil splater from spray gun
Que tipo de soldadura es la que utiliza?
I'm using a tig welder.
hi, could you share the electric connections scheme for making the pumpo? thanks
Hi, please have a look in the internet, there are many good schemes there is nothing special to a normal fridge search for "fridge electric scheme" or something like that.
@@samsworkshopdiary5748 thank you
Kindly mention the materials names